Repositories of cell signalling pathway models are available. Certain data relevant to the specification of parameter values in such models are also available. Protein interaction databases are useful for developing signalling schemes. Typically little reaction rate data is available. Enzymatic kinetics are generally more readily available.
- Biomodels.net:
 
-  Published cell signalling models for a variety   of simulation environments. Links to associated data sources are   provided. Models can be run online via the simulation environment   JWS Online (http://jjj.biochem.sun.ac.za/index.html).   http://www.ebi.ac.uk/biomodels/
 
- BJP Guide to Receptors and Channels:
 
-  An overview of receptors   and channels with bibliographies for each channel subfamily.   http://www.nature.com/bjp/journal/vgrac/ncurrent/
 
- DOQCS:
 
-  The Database of Quantitative Cellular Signalling contains   models of signalling pathways, largely built using GENESIS and   Kinetikit. It includes reaction schemes, concentrations and rate   constants. http://doqcs.ncbs.res.in/
 
- IUPHAR Databases:
 
-  The IUPHAR Database of G-Protein-Coupled   Receptors and the IUPHAR Database of Voltage-Gated and Ligand-Gated   Ion Channels contain information about the gene sequences,   structural and functional characteristics and pharmacology of ion   channels. They are available from the database of the IUPHAR   Committee on Receptor Nomenclature and Drug Classification.   http://www.iuphar-db.org/